Instantaneous room heater



May 30, 1933. BURKLE 1,911,747

INSTANTANEOUS ROOM HEATER Filed May 2. 1932 llll|l||lllIllmllllllilflllllllllll Illlll IIIIIIIPIIIIIIIHHIIII IN VENT OR ROBERT sue/.5

BY z g g ATTORNEY Patented May 30, 1933 UNITED STATES PATENT OFFICE ROBERT BURKLE, OF NORTH BERGEN, NEW JERSEY INSTANTANEOUS ROOM HEATER.

Application filed May 2, 1932. Serial No. 608,760.

This invention relates to new and useful Fig. 8 is a schematic wiring diagram of the improvements in an instantaneous room device. heater. The heater, according to this invention, The invention has for an object the concomprises a casing 10 which is substantially struction of a heater mentioned which is of rectangular form and open on the inner characterized by the ability of instantaneousside. A screen 11 is engaged over the open 1y heating up from room temperature to a inner side to close it without restricting the pro-determined temperature and thereafter passage of air. The outer side of the casing maintaining said temperature. has a plurality of openings formed by in- 10 This arrangement adapts the device very verted punched out pockets 12. Extension nicely for use in private homes, oflices and and slides 13 are mounted upon the ends of premises having windows and requiring imthe casing 10 to adapt the casing for insertion mediate heating. between the sash guide strips of a window Furthermore, the invention also proposes a e end slldes are ad1ustably mount- 15 to adapt the heater for insertion between ed so that they may be slightly extended when jamh of th bottom edge of a window sash and the device placed 1n po t on- A heating exte'ndable into the guide strips of the sash to 6 m 14 1S t- Wlthlll the caslng provide simultaneous ventilation and heat- 00I1 I1eCted Wlth a e for lls ng i I rapid heating when the device 1S first turned 20 Th i ti f th proposes th on and subsequent controlling the heating to struction of a device of the class described maintaln arm-determmed ffi p e which is of simple, durable construction, deh eefing element 14 is divided into three d bl i use d ffi i t i Operation d sections indicated in Fig. 8 by reference num which can be manufactured and sold at a rea- 6131s 16 a 9 p re ir- 5 sonable cost, cult is provided which includes the power For further comprehension of the invenlead a swltch 19 and g' sectlons tion, and of the objects and advantages thereand 17 all f 1n e of, reference will be had to the following deg temperature events are provldefl to scription and accompanying drawing, a d t cause instantaneous heating up to the desired 30 the appended claims in which the various temperature as Shown the awmg, three novel features of the invention are more of these circuits have been shown, one for tiularly Set forth each of the heating sections of the heating In h accompanying drawing forming a element 14. -While just three heating sections material part of thi di l fl have been disclosed this is not intended as Fi 1 is a Sectional elevational View of a a limitation since the invention can be apdevice constructed according to this inven- Phed to a different number The hlgh n b 1 t 1 perature circuits include taps 20 and 21 coniz g gg g y m {en ,away 0 also 056 m nected with the ends of the heating sections Fig. 2 is an end elevational View of Fig. 1, 16 and These taps are connected in d a manner so that the heating sections are partlany broken away to dlsclose mtenor connected in parallel and include a relay t v switch for their 0 eration.

3 1S 'p i 1 partlany One of thehigl i temperature circuits may broken w dlsclus? mter1 Or P r be traced from the tap 21 connected with 45 F1g-4 Slde elevfjltlonal of a thermo' oneof the leads 18 and passing through relay 5t=1t 11516d m the switch 22 and thence through tap 20, the g- 5 8 p P 6 0f g- I winding 15 and third lead 18. Another one Fig. 6 is a side elevational view of a relay of the high temperature circuits may be used in the device. traced from one of the loads 18 to the lead 50 Fig. 7 is a top plan view of Fig. 6. I 21 through relay switch 22, the tap 20, the.

heating section 16, the tap 21, another relay switch 23, a lead 24, and back to the lead 18. The third high temperature circuit may be traced from one of the leads 18 through the heating element 17, the tap 21, the relay 23,

the lead 21- and finally the lead 18.

The relay switches 22 and 23 are connected for unitary operation and have a common coil 25 to cause the operation. A shunt circuit is provided across the heating element l i and includes a two pole thermo switch 26. This shunt circuit may be traced from one of the leads 18 to the lead 27, a lead 28, contact 29 through the switch 26 when the switch is hot, then along lead 30 through the coil 25, through a resistance 31, and back to the other lead 18.

A short circuiting circuit is provided for short circuiting the coil 25 and is arranged across the heating element 14. This short circuit-ing circuit includes a switch 32 connected with the relay which operates the switches 22 and 23. The short circuiting circuit may be traced from I one of the leads 18 along lead 27 through the switch 32 when the latter is closed to the thermo switch 26 and thence to the contact 33 when the thermo switch is cold, then along to the resister 31 and finally to the other lead 18.

The thermo switch 26 is shown in detail in Figs. 4 and 5 and is shown to comprise a bi-metal arm 3 1 located between arms 35 and 36 respectively carrying the contacts 29 and 33. The contact 29 is in the form of a screw adjustable so as to control within certain limits the time of operation of the switch. Each of the arms are insulated from each other. Further details of the switch is thought not necessary since such switches are generally known.

The relay switch is shown in detail in Figs. 6 and 7. It is shown to comprise a base 37 supporting the coil through which a core 38 is mounted. This core is tensioned by a spring 39 offset A. C. hum. On one end of the core 38 an insulation plate 40 is mounted which carry the switches 22 and 23 respectively engageable against suitable contacts. At the front end the core 38 is provided with a stem 11 adapted to engage and close the switch 32 as the core moves frontwards to open the switches 22 and 23. A plug 43 is mounted upon the front of the casing 10 and is connected with the leads 18 so that a complimentary plug element may be engaged thereon for connecting the device with asource of current. The switch 19 is also shown mounted upon the front of the casing 10 so that the device may be conveniently operated.

The operation of the device may be traced by assuming it cold in which condition the thermo switch 26 will be resting against the contact 33 and the relay closed so that the switches 22 and 23 are closed and the switch 32 open. To set the device in operation the switch 19 should be closed. The current then flows through the heating sections 15, 16 and 17 in parallel to cause them to heat up very rapidly, in fact, nearly instantaneously. The parallel connection of the heat sections is accomplished by the high temperature circuits traced before. hen the proper tem perature is reached the thermo switch 26 will move so as to close the circuit at the contact 29 which immediately sets the shunt. circuit into operation and causes the energization of the coil 25 of the relay. Then the relay functions to open the switches and 23 and simultaneously closes the switch 32. lVhen the switches 22 and 23 are open the high temperature circuits are interrupted and the current is now forced to flow the heating elements 15, 16, and 17 in series.

The temperature will slowly fall and the thermo switch 26 will move away from the contact 29 but the relay will remain in its positions since the circuit is closed through the switch 32 and the coil 25 consequently energized. When the thermo switch 26 makes contact with the contact 33 the coil 25 will be short circuited so that the relay moves back into its original position wherein the switches 22 and 23 are closed and the switch 32 open. The heating sections are now connected in multiple and causes additional heating which will cause the thermo switch 26 to start moving towards the contact 29. In this manner, the device continues to function during its operation.

Air entering through the pockets 12 passes through the heated atmosphere within the casing 10 and discharges thru screen 11. The heating element 14 may be of any design and construction generally known. A bafile plate may be attached upon the back of the casing 10 to direct or deflect the heat current as desired. Preferably, the screen 11 should be secured in place by thumb screws, not shown on the drawing, so that it may be easily removed for servicing the device. As a modified construction the relay may be omitted and merely a single heating element used instead.

Vhile I have shown and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is 1. An instantaneous room heater. comprising an adjustable casing adapted to be placed between the jamb and bottom of a raised window sash and at the sides between the sash guide strips on the frame of the window,

said casing being closed at the outside and formed with a plurality of shielded openings, a screeniattached upon the inside of said casing, a heating element mounted within theeasin'g; means for causing rapid heating of said element when the device is initially turned on, and means for controlling the heating element to maintain a temperature substantially constant within certain limits, said openings in the outside of said casing comprising inverted pockets stamped therefrom.

2. An instantaneous room heater, comprising an adjustable casing adapted to be placed between the j amb and bottom of a raised window sash and at the sides between the sash guide strips on the frame of the window, said casing being closed at the outside and formed with a plurality of shielded openings, a screen attached upon the inside of said casing, a heating element mounted within the casing, means for causing rapid heating of said element when the device is initially turned on, and means for controlling the heating element to maintain a temperature substantially constant within certain limits, said adjustable casing comprising a main portion and end adjustment slides extendable.

3. In a device of the class described, a low temperature circuit including heating element having a plurality of sections connected in series, high temperature circuits includ' ing taps connected between the ends of said heating sections and connecting these sections in parallel and a relay switch in each of these circuits, a shunt circuit across said heating element and including a two pole thermo switch normally open at one pole and closed at the other pole to short circuit the coil of said relay, and a short circuiting circuit across said heating element and including a switch connected with the relay to close as the relay opens, and said thermo switch being engageable against its other pole to include the coil of said relay.

4. In a device of the class described, a low temperature circuit including heating element having a plurality of sections connected in series, high temperature circuits including taps connected between the ends of said heating section and connecting these sections in parallel and a relay switch in each of these circuits, a shunt circuit across said heating element and including a two pole thermo switch normally open at one pole and closed at the other pole to short circuit the coil of said relay, and a short circuiting ciircuit across said heating element and including a switch connected with the relay to close as the relay opens, and said thermo switch being engageable against its other pole to include the coil of said relay, said circuits being connect ed with a force of power, and a switch being interposed for turning the device oil' and on.

5. An instantaneous room heater, comprising an adjustable casing adapted to be placed between the jamb and bottom of a raised Window sash and at the side between the sash guide strips on the frame of the Window, said casing being closed at the outside and formed with a plurality of shielded openings, a screen attached upon the inside of said casing,'a heating element mounted within the casing, means causing rapid heating of said element when the device is initially turned on, and means for controlling the heating element to maintain a temperature substantially constant within certain limits, said two latter means comprising a low temperature circuit including heating element having a plurality of sections connected in series, high temperature circuits including taps connected between the ends of said heating sections and connecting these sections in parallel and a relay switch in each of these circuits, a shunt circuit across said heating element and including a two pole thermo switch normally open at one pole and closed at the other pole to short circuit the coil of said relay, and a short circuiting circuit across said heating element and including a switch connected with the relay to close as the relay opens, and said thermo switch being engageable a ainst its other pole to include the coil of said relay.

6. An instantaneous room heater, comprising an adjustable casing adapted to be placed between the jamb and bottom of a raised window sash and at the sides between the sash guide strips on the frame of the window, said casing being closed at the outside and formed with a plurality of shielded openings, a screen attached upon the inside of said casing, a heating element mounted within the easing, means for causing rapid heating of said element when the device is initially turned on, and means for controlling the heating element to maintain a temperature substantially constant within certain limits, said two latter means comprising a low temperature circuit including a heating element having a plurality of sections connected in series, high temperature'circuits including taps connected between the ends of said heating sections and connecting these sections in parallel and a relay switch in each of these circuits, a shunt circuit across said heating element and including a two pole thermo switch normally open at one pole and closed at the other pole to short circuit the coil of said relay, and a short circuiting circuit across said heating element and including a switch connected with the relay to close as the relay opens, and said thermo switch being engageable against its other pole to include the coil of said relay, a resister being included Within said short circuiting circuit.

7. An instantaneous room heater, comprising an adjustable casing adapted to be placed between the amb and bottom of a raised window sash and at the sides between the simultaneous with the openingof the switches sash guide strips on the frame of the window, in said high temperature circuits.

said casing being closed at the outside and formed with a plurality of shielded openings, a screen attached upon the inside of said casing, a heating element mounted within the casing, means for causing rapid heating of said element when the device is initially turned on, and means for controlling the heating element to maintain a temperature substantially constant within certain limits, said two latter means comprising a low temperature circuit including heating element having a plurality of sections connected in series, high temperature circuits including taps connected between the ends of said heating sections and connecting these sections in parallel and a relay switch in each of these circuits, a shunt circuit across said heating element and including a two pole thermo switch normally open at one pole and closed at the other pole to short circuit the coil of said relay, and a short circuiting circuit across said heating element and including a switch connected with the relay to close as the relay opens, and said thermo switch being engageable against its other pole to include the coil of said relay, said relay having a single core and separate switches each included in said high temperature circuits.

8. An instantaneous room heater, comprising an adjustable casing adapted to be placed between the jamb and bottom of a raised window sash and at the sides between the sash guide strips on the frame of the window, said casing being closed at the outside and formed with a plurality of shielded openings, a screen attached upon the inside of said casing, a heating element mounted within the casing, means for causing rapid heating of said element when the device is initially turned on, and means for controlling the heating element to maintain a temperature substantially constant within certain limits, said two latter means comprising a low temperature circuit including heating element having a plurality of sections connected in series, high temperature circuits including taps connected between the ends of said heating sections and connecting these sections in parallel and a relay switch in each of these circuits, a shunt circuit across said heating element and including a two pole thermo switch normally open at one pole and closed at the other pole to short circuit the coil of said relay, and a short circuiting circuit across said heating element and including a switch connected with the relay to close as the relay opens, and said thermo switch being engageable against its other pole to include the coil of said relay, said relay having a single core and separate switches each included in said high temperature circuits, the core of said relay being engageable to close the switch in said short circuiting circuit In testimony whereof I have aflixed my signature.

ROBERT BURKLE. 

